Reproduced Oracle automatically backs up under Windows and deletes today's scripts:

1. @echo off
   Echo ================================================
   Automated backup scripts for Oracle databases in the Echo Windows environment
   Echo 1. Use the current date to name the backup file.
   Echo 2. Automatically delete backups up to 7 days ago.
   Echo ================================================
   :: Remove the current time in "YYYYMMDD" format.
   Set backupdate=%date:~0,4%%date:~5,2%%date:~8,2%
   :: Set the user name, password, and database to be backed up.
   Set User=xxx
   Set password=123456
   Set Database=dbtest
   :: Create a backup directory.
   If not exist "D:\backup\data" mkdir D:\backup\data
   If not exist "D:\backup\log" mkdir D:\backup\log
   Set Datadir=d:\backup\data
   Set Logdir=d:\backup\log
   Exp%user%/%password%@%database% file=%datadir%\data_%backupdate%.dmp Log=%logdir%\log_%backupdate%.log
   :: Delete the backup 7 days ago.
   forfiles/p "%datadir%"/s/m * */d-7/C "cmd/c del @path"
   forfiles/p "%logdir%"/s/m * */d-7/C "cmd/c del @path"
   Exit

Copy from http://blog.csdn.net/iw1210/article/details/39312783

Automated backup scripts for Oracle databases in Windows environments

Batch file (. bat)

Reproduced Oracle automatically backs up under Windows and deletes today's scripts: